Tired of boring lock screens? Want something original? Love the 80s? With the 35 anniversary of the famous games comes a new app to show off your respect for the enigmatic aliens.

Invader of the Day will give you a procedurally generated lock screen that is updated a few times a day.

There are zillions of weird alien invaders all over the galaxy and some of them will invade your phone. Can you discover them all? The generated lock screen can also display the real moon phase. Handy for the werewolves amongst us.